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Eastern US Mountain Air Quality - Ozone

Mountain WatchReal-time Ozone levels from national parks and natural areas.
Move pointer to map locations map site icon for current ozone levels.

Acadia National Park White Mountains, NH Whiteface Mountain, NY Mohawk Mountain, CT Shenandoah Nationa Park Ashville, NC and Shining Rock Wilderness Great Smoky Mountains National Park
Acadia National Park
07 Nov 2009, 3PM

Location &
Elevation
(feet)		8-Hr Avg. Ozone
Concentration
(ppb)
Acadia NP27

Air Quality Index (AQI)
Good        
Good
No health impacts expected in this range.		      
Moderate
Unusually sensitive people should consider limiting prolonged outdoor exertion.		      
Unhealthy for Sensitive Groups
Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.		      
Unhealthy
Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion.		      
Very Unhealthy
Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion. Everyone else, especially children, should limit outdoor exertion.		   Very Unhealthy
Sources: EPA AIRNow, AMC, NHDES

Take a closer look at New Hampshire state wide real-time air quality @ www.airquality.nh.gov

Also check the Forecasted Air Quality Levels in NH which includes a high elevation forecast for areas >3000' in the state in the table at the bottom of the page.

High Ozone on Mountain Tops

Note that some locations show ozone levels at both a high and low elevation site. Are the concentrations the same today at these sites?

Learn why mountains have higher ozone levels than nearby adjacent valleys.

AMC’s research has shown that the higher summit of Mount Washington has consistently higher ozone level than Pinkham Notch. When we have a spell of bad air pollution in our region these differences are even more pronounced. 

Learn more about ozone:

  1. What is ozone?
  2. Why is ozone higher on mountain tops?
  3. What are the impacts of ozone?
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